@misc{indiciaee540875c1275,
  title = {Numerical investigation of implementation of air-earth boundary by acoustic-elastic boundary approach},
  author = {Y. Xu and J. Xia and R. D. Miller},
  year = {2007},
  doi = {10.1190/1.2753831},
  url = {https://pubs.usgs.gov/publication/70030773},
  note = {Source identifier: 70030773}
}